Lock for fire-arms



(N0 Model.) .2 Sheets-Sheet 1.

G. W. MOOLINTOOK. LOOK FOR FIRE ARMS.

No. 430,397. Patented June 17-, 1890.

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(No Model.) 2 sheets-sheet z.

' G. W. MGGLINTOCK.

LOOK FOR FIRE ARMS. No. 430,397. Patented June 17, 1890 Q1/55 5 E75. Q66 3;;

UNITED STATES PATENT OFFICE.

GEORGE V. MCCLINTOCK, OF QUINCY, ASSIGNOR OF ONE-HALF TO MELLEN N. BRAY, OF BROOKLINE, MASSACHUSETTS.

LOOK FOR FIRE-ARMS.

SPECIFICATION forming part of Letters Patent No. 430,397, dated June 17, 1890.

Application filed July 11.1889. Serial No. 317,183. (No model.)

To all whom it may concern.- hammer B, and which has a projecting arm Be it known that I, GEORGE \V. MOOLIN- 0, adapted to engage in a small notch clof the TOCK, f Quincy, in the county of Norfolk hammer, constituting the sear of the same, and State of Massachusetts, have invented and which can lock the hammer in a cocked 55 certain new and useful Improvements in position.

Locks for Fire-Arms, of which the following E is a tension-spring, which bears against 1s a specification. the top of the rear arm 6 of the t igger, thus Myinvention relates to looks for fire-arms; tending always to keep the arm 0 raised and and my improvements consist, substantially, in contact with the lower end of the ham- 60 10 n mechanism for causing the tension of the mer B.

lnainspring (which engages with the ham- F is an eccentric or cam, which is fixed upon mer) by pressure upon said spring between a shaft G, passing through the plate A, and its ends, and also a trigger for locking the in such a position under the spring 0 and behammer in a cooked condition and unlocking tween its ends that when said spring is re- 65 the same, and thus releasing the tension of laxed in its lowermost position it will lightly the mainspring, so that it will force the hambear or almost. bear upon the portion of the T1161 periphery of said cam nearest its axis G. My improvements also consist in certain (See Figs. 3 and 7.) The shaft G is provided details of construction, as more particularly withalever orcrank handle H, which is keyed 7o hereinafter described. to said shaft on the opposite side of the plate In the accompanying drawings, forming a or stock'to the rest of the mechanism. A part of this specification, Figure 1 is an elesmall two-armed yoke I is loosely pivoted to vation of my improved lock, showing the pothat part of the eccentric E farthest from the sitions of. the parts after the tension has been axis G, and one of its arms f passes over the 25 applied to the mainspriug between its ends. spring 0. The latter is thus inclosed be- Fig. 2 is a similar view showing the positions tween the eccentric F and the arm f of the of the parts after the tension on the main,- yoke. 13y raising or lowering the handle H spring has been applied and after the hamthe cam F will be turned on its axis and the mer has been released from the scar on the spring 0 will either be raised or lowered. So 0 trigger, or after the trigger has been pulled. Pins or projections g 9' may be employed to Fig. 3 shows the positions of the parts after limit the play of the handle II up and down, the hammer has been drawn back to lock it to respectively. the sear of the trigger, and Fig. i is a cross-sec- The several parts are adapted to operate in tion taken through the line 00 :cof Fig. 2 and the following manner: The handle II is first 3 5 lookin g backward. Figs. 5, 6, and 7 show a lowered until it has attained the position slightly-modified construction illustrating shown in Fig. 3, or until it has been stopped similar positions of the parts to Figs. 1, 2, by the pin g, and by said lowering of the and 3, respectively; and Fig. 8 is a cross-sechandle the mainspring C will be drawn down tion 011 the line y y of Fig. 0 and looking by the yoke I on or near that portion of the o backward. periphery of the cam F nearest its axis G, and Similar letters represent like parts in all the hammer B will also at the same time be the figures. 4 drawn down or back with the spring 0 until A is the plate upon which the mechanism said hammer has been locked by the sear c of the lock is supported. on the trigger D. The positions of the parts 45 B is the hammer, which is pivoted to the will then be as shown in Fig. 3. The handle plate A near its front end; and (J is the main- H is then pulled up until it is stopped by the spring, which is pivoted near the end of said pin g, and by said raising of the hammer the plate and with its free and forward end a cam F will operate and bear upon the under engaging with a recess 1; in the lower end of surface of the spring 0, raising it between its 5 the hammer. ends by the eccentric portion of said cam and D is the trigger, which is pivoted below the causing the tension of said spring. Theposition of the parts will then be as shown in 1. When the trigger D is pulled back, it will release its sear c from the notch d of the hammer B, and the spring 0 will then end denly be relaxed from its tension in a raised position, and will force the hammer forward, as shown in Fig. 2. The handle II is then lowered and the parts will again resume the positions shown in Fig. 3, when the operation may be repeated.

Referring to Figs. 5, 6, '7, and 8, a short fixed shaft or journal-bearing G is used to support the eccentric E", which is loosely journaled upon said shaft. A crank K, fixed to a movable shaft or journal L, above the spring 0, has a longitudinal slot n, extending to near its free end, and the pivotal pin 1', which supports the yoke I, extends through the cam F into the slot h. The handle H is fixed upon the outer end of the shaft L. A roller 10 is journaled on the pivotal pin '1: in a slot Z in the cam F.

The operation of the parts will be substantially the same as that described with relation to Figs. 1, 2, 3, and 4, the only difference being that the cam F will be operated by the handle I-I through the intermediation of the crank K, its slot h, and the pin ion said cam, instead of being operated directly by the handle H. The object of the slot h is to allow all the play necessary for the pin "J and the cam and ycke. If it be desired to raise and push forward the hammer B slowly and with ve little force before it has been locked by its sear c, or before the tension on the spring is given, it can readily be done by simply raising the handle. After the sear has locked the hammer the latter can be released and raised by the handle H by previously pulling back the trigger, and thus releasing the hammer from its sear. If it is desired to raise and push forward the hammer slowly and with very little force after the tension on the spring has been given, said tension is first relaxed by lowering the handle, then drawing back the trigger, and finally raising the handle again.

I claim 1. An improved lock for fire-arms, consisting of the hammer and a mainspring situated back of said hammer and engaging with the same, in combination with a movable piece situated between the ends of the mainspring, and means for pressing said piece against the spring between its ends to cause tension of the same, substantially as and for the purpose described.

2. An improved lock for fire-arms, consistin g of the hammer and a mainspring situated back of said hammer and engaging with the same, in combination with an eccentric situated between the ends of the mainspring, and means for rotating said eccentric to press it against the spring between its ends, whereby the tension of the spring will be caused, substantially as andfor the purpose described.

3. In combination with the hammer and a mainspring situated back of said hammer and engaging with the same, a mevable eccentric pivoted between the ends of the spring and having a yoke pivoted to its projecting or cam portion, said yoke and cam inclosing the mainspring between them, and means for rotating said eccentric, all substantially as and for the purpose described.

4. In combination with the hammer and a pivoted mainspring situated back of said hammer and engaging with the same, a movable eccentric pivoted between the ends of the spring and having a yoke pivoted to its projecting or cam portion, and said eccentric and yoke inclosing the mainspring between them, and means for rotating said eccentric, all substantially as and for the purpose described.

5. In combination with the hammer and the mainspring situated back of said hammer and engaging with the same, the movable eccentric pivoted between the ends of the spring, its yoke pivoted to its cam portion, and the spring-trigger engaging in a notch of the hammer, allsubstantially as shown and described.

6. In combination with the hammer and the mainspring situated back of said hammer and engaging with the same, the movable eccentric and its yoke pivoted between the ends of the spring, the crank K, loosely attached to said eccentric, and means for operating said crank, all substantially as shown and described.

7 In combination with the hammer and the mainspring situated back of said hammer and engaging with the same, the crank K, having the slot h, the eccentric and yoke inclosing said spring and having the pin 1', said pin engaging with the sl-ot h, and means for operating said crank, all substantially as shown and described.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 29th day of June, A. D. 1889.

GEO. W. MCGLINTOCK.

Witnesses:

C. F. BROWN, A. D. HARRISON.

IIG 

